SMO Series SHEL LAB Mechanical Convection Laboratory OvensRapid Heat-Up Time to 306°CSMO1 • SMO3 • SMO5

SMO Series Features and Benefits

The SMO Series ovens are engineered for safe, accurate, and uniform performance in demanding laboratory environments.

Ideal for Industrial, Analytical and General Laboratory Applications

SHEL LAB SMO Series laboratory ovens are recommended for critical scientific and analytical use in laboratory and pilot plant product research. Typical applications include aging, curing, drying, baking, pre-heating, conditioning and life cycle testing. Choose from three cabinet sizes, each with forced-air circulation and reserve heating power for quick recovery after door openings.

Fast ramp-up to 306°C for faster cycle times.

Temperature range approximately 20°C above ambient to 306°C for multiple applications.

Advanced PID temperature control system for sensitive response.

Built-in digital timer for automatic operation following manual start.

Independent overtemperature setpoint and operational control override for additional safety.

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Stainless steel interior construction for long life operation, easy cleaning.

Forced-air circulation to assure maximum temperature uniformity.

Triple-wall construction to minimize external surface temperature.

Stainless steel shelves are adjustable on 0.5" (12.7 mm) centers to provide flexible inventory options.

Rear access port, 1.75" diameter (44 mm) for independent cables, instrumentation.

Exhaust port, 3.0" diameter (76 mm), adjustable, with external connection to customer-supplied vent for effluent exhaust if required.

Internationally certified CAN/CSA, UL, EN, IEC 61010, and compliant with CE.

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SMO5-2

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High Temperature Performance

Sheldon Manufacturing, Inc. • SMO Series Mechanical Convection Laboratory Ovens • 2

SHEL LAB SMO Series ovens are available in 110-120V, 50/60Hz or 220-240V, 50/60Hz configurations and achieve temperatures up to 306°C with fast ramp-up and recovery times.

Heat-Up Rapid heat-up times to 306°C depend on voltage selected. Published heat-up performance is based on a standard cabinet under controlled testing at a 20°C ambient temperature, line voltage ±10% of specified voltage.

Recovery Upper vents are closed when recovery times following door openings are tested. Published recovery performance is based on a standard cabinet under controlled testing at a (22 ± 3)°C ambient temperature, line voltage ±10% of specified voltage.

Applications:• Aging• Asphalt Testing• ASTM, UL and Life Testing• Baking, Conditioning, Curing• Burn-in• Drying• Curing• Moisture and Stability Testing

SMO3 SMO1

Control, Timer Program and Monitoring

The advanced loop PID (proportional, integral, derivative) controller commands proportional power to the heating element to provide the most accurate and responsive control. Each controller is matched to the oven size to assure faster response to set-point without overshoot, and quicker recovery following door openings. The on-board timer permits programmed dwell cycles with automatic shut-off for custom applications. Indicator lights are included for visual status feedback on critical functions.

Sheldon Manufacturing, Inc. • SMO Series Mechanical Convection Laboratory Ovens • 3

Integrated Control Panel

All controls are centrally located on the main panel including manual power and timer on/off switches, independent overtem-perature control, digital temperature and timer setpoint adjustments, and indicator lights for all functions.

Main Power on/off switch

Timer on/off switch

Overtemperature setpoint dial

Overtemperature indicator light

Timer data entry

Timer start/stop

Temperature setpoint data entry, 1°C increments

Heating element activation

indicator light

SMO Series Oven Specification Chart

SMO1 SMO3 SMO5

Interior Volume, Nominal 1.4 cu.ft. (39.4 liters) 3 cu.ft. (85.0 liters) 4.9 cu.ft. (138.0 liters)

Interior Dimensions W x D x H 12.1" x 13.7" x 14.5" 307 x 349 x 368 mm

16.5" x 19.5" x 16.2"419 x 495 x 412 mm

21.0" x 19.4" x 20.7"533 x 494 x 527 mm

Exterior Dimensions W x D x H 22.7" x 23.5" x 31.5" 577 x 596 x 800 mm

26.9" x 28.6" x 34.0"684 x 727 x 840 mm

31.4" x 28.1" x 38.8"798 x 714 x 986 mm

Interior Construction 430 series stainless steel 400 series stainless steel 400 series stainless steel

Exterior Construction Painted Cold Roll Steel Painted Cold Roll Steel Painted Cold Roll Steel

Shelves (See Accessories)* 2 standard, 6 total 2 standard, 7 total 2 standard, 9 total

Maximum Weight Per Shelf* 50 lb / 22.6 kg 50 lb / 22.6 kg 50 lb / 22.6 kg

Permitted Total Load 100 lb / 45.3 kg 200 lb / 91 kg 200 lb / 91 kg

*Extra standard and reinforced shelves available. See Accessories.

SMO Series Oven Selection Chart

SMO1 SMO3 SMO5

Order Model Number, Voltage Specific SMO1 SMO1-2 SMO3 SMO3-2 SM05 SMO5-2

Electrical, 50/60Hz, AC, 1Ø

Voltage 110V-120V 220V-240V 110V-120V 220V-240V 110V-120V 220V-240V

Full Load Amps 12 8 14 10 14 10

Nominal Power (watts @150°C) 650 650 675 675 700 725

Plug Supplied NEMA 5-15P EU 6-15P* NEMA 5-15P EU1-16P NEMA 5-15P EU1-16P

Energy Consumption (kWh/day)

At 80°C 6.5 5.7 7.2 6.5 7.5 6.7

At 150°C 12.4 11.8 13.1 12.2 13.5 12.7

At 306°C 19.8 18.8 23.5 22.1 23.8 22.7

Temperature Range 20°C above ambient to 306°C

Heat-Up to Ambient — Minutes to 80°C 8 8 6 6 9 6

Heat-Up to Ambient — Minutes to 150°C 20 20 27 15 28 28

Heat-Up to °C Ambient — Minutes to 306°C 52 52 124 57 130 80

Recovery after Door Opening (30 sec.) — Minutes to 80°C 1.5 2.5 1.5 1 2 2

Recovery after Door Opening (30 sec.) — Minutes to 150°C 4.5 3.5 2 1.5 4 3

Recovery after Door Opening (30 sec.) — Minutes to 306°C 14 7 18 5.5 45 20

Recovery after Door Opening (60 sec.) — Minutes to 80°C 4 3 2 2 3.5 3

Recovery after Door Opening (60 sec.) — Minutes to 150°C 6 4.5 4.5 3.5 6 5.5

Recovery after Door Opening (60 sec.) — Minutes to 306°C 20 9 36 11 57 26

Temperature Uniformity

At 80°C 1.00°C 0.75°C 1.00°C 0.75°C 0.75°C 0.75°C

At 150°C 2.30°C 1.80°C 1.80°C 2.50°C 1.80°C 1.50°C

At 306°C 4.70°C 4.00°C 5.00°C 5.00°C 4.50°C 3.50°C

Ventilation

Air Changes Per Hr at Max 330 330 225 225 180 180

Max CFM 5.6 5.6 11.3 11.3 15.2 15.2

Velocity 125 125 140 140 145 145

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DIN 12880 ComplianceSHEL LAB SMO Series ovens are designed to meet or exceed the performance criteria established through DIN 12880:2007:05 and ASTM E145-94 (Reapproved 2006.) These criteria set common standards for laboratory oven performance in heat-up, temperature uniformity and door-open recovery time. Confirmation of temporal and spatial performance is achieved by testing with multi-point temperature probes strategically positioned throughout the oven chamber interior, including center point positions where stability, equilibrium and setpoint control are required.

Note: DIN 12880 is an international standard for measuring the performance of electrical laboratory ovens and incubators based on Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2007.

*Both NEMA 6-15P, 2.5M and CEE7/7 (EU1-16P), 2.5M are supplied with 220V-240V models.

Sheldon Manufacturing, Inc.300 N. 26th Avenue • PO Box 627 • Cornelius, OR 97113 USA+1-503-640-3000 • sheldonmanufacturing.com • sales@sheldonmfg.com

We reserve the right to alter specs at any time. Sheldon Manufacturing P/N 0740555 Made in USA. Rev. 6/20

SMO5 SMO3 SMO1

FRONT RIGHT SIDE TOP

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Site Preparation and Installation Guides

SMO1 SMO3 SMO5

Door Swing Clearance (Nominal) 23.0" (585 mm) 27.0" (686 mm) 32.0" (813 mm)

Wall Clearance, Sides 6.0" (152 mm) 6.0" (152 mm) 6.0" (152 mm)

Wall Clearance, Rear 12.0" (305 mm) 12.0" (305 mm) 12.0" (305 mm)

Wall Clearance, Top 24.0" (610 mm) 24.0" (610 mm) 24.0" (610 mm)

Shipping Weight 167.0 lb (77.0 kg) 216.0 lb (98.0 kg) 258.0 lb (117.0 kg)

SMO Oven Options and Accessories

SMO1 SMO3 SMO5

Sliding Shelf Option Includes 1 Shelves, 2 Slides 9751371 9751370 9751366

Caster Platform N/A 9000597 9000594

Extra Shelf, Standard, Max. Weight 50 lb (22kg); Includes Brackets 9751227 9751228 9751229

Extra Shelf, Reinforced, Max. Weight 75 lb (34kg); Includes Brackets Contact Our Sales Team For More Details

Options must be specified when ordering. Contact SHEL LAB for additional information.